<template>
	<div class="editor-container">
		<Toolbar :editor="editorRef" :mode="mode" />
		<Editor
			:mode="mode"
			:defaultConfig="state.editorConfig"
			:style="{ height }"
			v-model="state.editorVal"
			@onCreated="handleCreated"
			@onChange="handleChange"
		/>
		<ImgDialog ref="imgDialogRef" :canChooseImagesNum="1" @changeImg="changeImg"></ImgDialog>
	</div>
</template>

<script setup lang="ts" name="wngEditor">
// https://www.wangeditor.com/v5/for-frame.html#vue3
import '@wangeditor/editor/dist/css/style.css';
import { reactive, shallowRef, ref, watch, onBeforeUnmount } from 'vue';
import { IDomEditor } from '@wangeditor/editor';
import { Toolbar, Editor } from '@wangeditor/editor-for-vue';
import ImgDialog from '/@/components/selectMaterial/imgDialog/index.vue';
type InsertFnType = (url: string, alt: string, href: string) => void;
// 定义父组件传过来的值
const props = defineProps({
	// 是否禁用
	disable: {
		type: Boolean,
		default: () => false,
	},
	// 内容框默认 placeholder
	placeholder: {
		type: String,
		default: () => '请输入内容...',
	},
	// https://www.wangeditor.com/v5/getting-started.html#mode-%E6%A8%A1%E5%BC%8F
	// 模式，可选 <default|simple>，默认 default
	mode: {
		type: String,
		default: () => 'default',
	},
	// 高度
	height: {
		type: String,
		default: () => '310px',
	},
	// 双向绑定，用于获取 editor.getHtml()
	getHtml: String,
	// 双向绑定，用于获取 editor.getText()
	getText: String,
});

// 定义子组件向父组件传值/事件
const emit = defineEmits(['update:getHtml', 'update:getText']);

// 定义变量内容
const editorRef = shallowRef();
const imgDialogRef = ref();
const state = reactive({
	editorConfig: {
		placeholder: props.placeholder,
		MENU_CONF: [],
	},
	editorVal: props.getHtml,
});
state.editorConfig.MENU_CONF['uploadImage'] = {
	// 自定义选择图片
	customBrowseAndUpload(insertFn: InsertFnType) {
		imgDialogRef.value.dialog = true;
		// 自己选择文件
		// 自己上传文件，并得到图片 url alt href
		// 最后插入图片
		// insertFn('', '', '')
	},
};
/**
 * 素材选择器
 * @param urls 选中得图片
 * @author lijx
 */
const changeImg = (urls: Array<string>) => {
	const editor = editorRef.value;
	if (editor == null) return;
	if (urls) {
		const node = {
			type: 'paragraph',
			children: [
				{
					type: 'image',
					src: urls[0],
					alt: '',
					href: '',
					style: '',
					children: [{ text: '' }],
				},
			],
		};
		// 在选区插入一个节点
		editor.insertNode(node);
		// 聚焦到最后
		editor.focus(true);
	}
};
// 编辑器回调函数
const handleCreated = (editor: IDomEditor) => {
	editorRef.value = editor;
};
// 编辑器内容改变时
const handleChange = (editor: IDomEditor) => {
	emit('update:getHtml', editor.getHtml());
	emit('update:getText', editor.getText());
};
// 页面销毁时
onBeforeUnmount(() => {
	const editor = editorRef.value;
	if (editor == null) return;
	editor.destroy();
});
// 监听是否禁用改变
// https://gitee.com/lyt-top/vue-next-admin/issues/I4LM7I
watch(
	() => props.disable,
	(bool) => {
		const editor = editorRef.value;
		if (editor == null) return;
		bool ? editor.disable() : editor.enable();
	},
	{
		deep: true,
	}
);
// 监听双向绑定值改变，用于回显
watch(
	() => props.getHtml,
	(val) => {
		state.editorVal = val;
	},
	{
		deep: true,
	}
);
</script>
